One of the current hotspots in astrobiology is the search for water in exoplanets. We all seem to share the idea that water is essential for the existence of life, and even the assumption that water and life are almost synonymous.
[caption id="attachment_44035" align="alignleft" width="320"] First stage of the Falcon 9 rocket landing on SpaceX's floating platform. / Mètode[/caption]
When NASA was founded, the USAF (United States Air Force) was deep into the development
You probably remember Steven Spielberg's 1977 film Close Encounters of the Third Kind in which, in a memorable final scene, humans communicate with aliens with music, specially with that well known "D E C C G" melody that would be later hummed by everyone.